body{
  background-image: url("../img/upload/bgimg.jpg");
  background-size: 100vw 100vh;
  background-attachment: fixed;
}
main{
  width: 1100px;
  margin: 50px auto;
  background-color: rgb(255, 255, 255,0.2);
  color: black;
  padding-bottom: 40px;
}
.video{
  width: 800px;
  box-sizing: border-box;
  margin: 10px auto;
  
}

picture video{
  width: 800px;
  height: 550px;
  border: 1px solid black;
  padding-left: 35px;
  padding-right: 35px;
  padding-bottom: 35px;
}
.videotopleft{
  font-size: 20px;
  padding-left: 40px;
  float: left;
  width: 70%;
}
.videotopleft span{
  font-size: 14px;
}
.videotopright{
  float: right;
  width: 30%;
}
.videotopright img{
  width: 70px;
  height: 70px;
  border-radius: 50%;
  float: left;
  margin-right: 30px;
}
.videotopright p{
  float: left;
  margin-top: 20px;
}
/* 简介 */
.intro{
  min-height: 100px;
  width: 80%;
  margin: 0 auto;
  border: 1px solid grey;
}
/*评论*/
.comment{
  margin: 50px auto;
  width: 80%;
}
.comment .head{
  width: 50px;
  height: 50px;
  border-radius: 50%;
}
.comment>h2{
  font-weight: 500;
  height: 60px;
}
.comment .mycomment{
  display: flex;
}
.comment .mycomment textarea{
  padding: 10px;
  background-color: #F1F2F3;
  width: 70%;
  min-height: 55px;
  border-radius: 10px;
  padding-left: 20px;
  border: none;
  outline: none;
  resize: none;
  margin-left: 10px;
  margin-right: 10px;
}
.comment .mycomment textarea::-webkit-scrollbar{
  display: none;
}
.comment .mycomment textarea::placeholder{
  padding-top: 10px;
}
.comment .commentbox{
  width: 80%;
  position: relative;
  margin-top: 20px;
}
.comment .commentbox .username{
  font-size: 15px;
  margin-left: 20px;
}
.comment .commentbox .commentcontent{
  margin-left: 50px;
  font-size: 15px;
  margin-bottom: 10px;
}
.comment .commentbox .commenttime{
  font-size: 13px;
}
.comment .commentbox .reply{
  border: none;
  background-color: transparent;
  margin-left: 20px;
 
}
.comment .commentbox .reply:hover{
  color: #16B5EE;
  cursor: pointer;
}
.mycomment .sendcomment{
  width: 70px;
  height: 40px;
  border-radius: 10px;
  background-color: #00AEEC;
  border: none;
  color: gray;
  margin: 7px;
}
  
/*回复的评论*/
.othercomment{
  min-height: 400px;
  position: relative;
}
.othercomment .replybox{
  padding-left: 50px;
  width: 65%;
}
.othercomment .replybox .commentcontent{
  font-size: 13px;
}
.othercomment .replybox .head{
  width: 40px;
  height: 40px;
}
.othercomment .replybox .commenttime{
  left: 98px;
}
.replyinput{
  margin-top: 10px;
}
/*评论区为空的默认样式*/
.nocomment{
  height: 30px;
  width: 100px;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}